Hi, I am working with a EG21-G module on a custom board.
The module is working fine when I try to received a voice call or when I use the data connection (for example a AT+QPING command).
However I am not able to start a voice call, this is the log (I enabled some URCs):
→ ATD
← NO CARRIER
← ^DSCI: 1,0,6,1,,129
moreover, after a failed call attempt, if I send whatever command I read an extra unexpected URC:
->AT
← OK
← ^DSCI: 1,0,2,1,,129
Of course, no calls are made or active.
We also have the evaluation board of the module and, with the same SIM, the outgoing voice calls work fine.
I suppose that the issue could be related to:
-
Some misconfiguration I made in the tests, note that I also tried to enable the VoLTE with no success. Could you please suggest some factory-reset command for the configuration? AT&F does almost nothing.
-
Some hardware missing prerequisites we are not aware of (PCM clock? We are in the development phase so not all the application/peripherals are running).
Do you have any suggestion?
I leave some module state information:
Quectel
EG21
Revision: EG21GGBR07A11M1G
+CREG=0,1
+CEREG: 2,1,“6980”,“0B81F0B”,7
+COPS: 0,0,“ho. ho.”,7 (“ho mobile” italian operator)
+CGDCONT: 1,“IP”,“web.ho-mobile.it”,“0.0.0.0”,0,0,0,0
+CGDCONT: 2,“IPV4V6”,“ims”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,0
+CGDCONT: 3,“IPV4V6”,“SOS”,“0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”,0,0,0,1
+CGPADDR: 1,“<my_ip>”
+CGPADDR: 2,“0.0.0.0,0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”
+CGPADDR: 3,“0.0.0.0,0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0”
+QCFG: “volte/disable”,0
+QCFG: “ims”,1,0
